Virtual multilingual fields don't work sometimes

Unit configuration:
1. virtual field defined as: 'FieldName' => Array ('type' => 'string', 'formatter' => 'kMultiLanguage', 'default' => '');
2. calculated field defined as: 'FieldName' => 'other_table.l%2$s_FieldName'

Then we need to recall object 2 times with different Special and as a result code: $object->GetField('FieldName') will work for first object, but won't work for 2nd object.